Most people can identify their top priority at work. Generally, it will be the part of the job that is most productive for their employer: for a merger and acquisitions banker, it could be landing a big deal for a client; for a lorry driver, the punctual delivery of an important consignment; for a hospital doctor or nurse, giving vital treatment to a patient.

But every job is ringed with secondary tasks – the routine but critical stuff covered by codes and guidelines. If such chores are neglected, the consequences may undermine overall success. New research suggests tired workers in demanding jobs start giving up doing those small, but vital, tasks remarkably quickly.

Technology can, of course, take over some basic chores altogether. It is no longer necessary to engage an additional auditor to cross-check the balance sheet, or to insist airline pilots handle every tiny aspect of monitoring and flying their aircraft.